2221022212120 has 16 divisors (see below), whose sum is σ = 4997299977360. Its totient is φ = 888408884832.

The previous prime is 2221022212111. The next prime is 2221022212121. The reversal of 2221022212120 is 212122201222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221022212121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27762777612 + ... + 27762777691.

It is an arithmetic number, because the mean of its divisors is an integer number (312331248585).

Almost surely, 2^{2221022212120} is an apocalyptic number.

2221022212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221022212120 is an abundant number, since it is smaller than the sum of its proper divisors (2776277765240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221022212120 is a wasteful number, since it uses less digits than its factorization.

2221022212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55525555314 (or 55525555310 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2221022212120 its reverse (212122201222), we get a palindrome (2433144413342).

The spelling of 2221022212120 in words is "two trillion, two hundred twenty-one billion, twenty-two million, two hundred twelve thousand, one hundred twenty".